<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="gb2312" />
    <title>404 page</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        body {
            /*text-align: center;*/
            background: #CEE8E7;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }
    </style>
</head>
<body>
    <img src="" alt=""/>
</body> 

</html>